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- /*
- * Copyright (c) 2008 Mans Rullgard <mans@mansr.com>
- *
- * This file is part of FFmpeg.
- *
- * FFmpeg is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * FFmpeg is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
- #ifndef AVUTIL_PPC_INTREADWRITE_H
- #define AVUTIL_PPC_INTREADWRITE_H
- #include <stdint.h>
- #include "config.h"
- #if HAVE_XFORM_ASM
- #if HAVE_BIGENDIAN
- #define AV_RL16 AV_RX16
- #define AV_WL16 AV_WX16
- #define AV_RL32 AV_RX32
- #define AV_WL32 AV_WX32
- #else
- #define AV_RB16 AV_RX16
- #define AV_WB16 AV_WX16
- #define AV_RB32 AV_RX32
- #define AV_WB32 AV_WX32
- #endif
- static av_always_inline uint16_t AV_RX16(const void *p)
- {
- uint16_t v;
- __asm__ ("lhbrx %0, %y1" : "=r"(v) : "Z"(*(const uint16_t*)p));
- return v;
- }
- static av_always_inline void AV_WX16(void *p, uint16_t v)
- {
- __asm__ ("sthbrx %1, %y0" : "=Z"(*(uint16_t*)p) : "r"(v));
- }
- static av_always_inline uint32_t AV_RX32(const void *p)
- {
- uint32_t v;
- __asm__ ("lwbrx %0, %y1" : "=r"(v) : "Z"(*(const uint32_t*)p));
- return v;
- }
- static av_always_inline void AV_WX32(void *p, uint32_t v)
- {
- __asm__ ("stwbrx %1, %y0" : "=Z"(*(uint32_t*)p) : "r"(v));
- }
- #if HAVE_LDBRX
- #if HAVE_BIGENDIAN
- #define AV_RL64 AV_RX64
- #define AV_WL64 AV_WX64
- #else
- #define AV_RB64 AV_RX64
- #define AV_WB64 AV_WX64
- #endif
- static av_always_inline uint64_t AV_RX64(const void *p)
- {
- uint64_t v;
- __asm__ ("ldbrx %0, %y1" : "=r"(v) : "Z"(*(const uint64_t*)p));
- return v;
- }
- static av_always_inline void AV_WX64(void *p, uint64_t v)
- {
- __asm__ ("stdbrx %1, %y0" : "=Z"(*(uint64_t*)p) : "r"(v));
- }
- #else
- #define AV_RL64 AV_RL64
- static av_always_inline uint64_t AV_RL64(const void *p)
- {
- union { uint64_t v; uint32_t hl[2]; } v;
- __asm__ ("lwbrx %0, %y2 \n\t"
- "lwbrx %1, %y3 \n\t"
- : "=&r"(v.hl[1]), "=r"(v.hl[0])
- : "Z"(*(const uint32_t*)p), "Z"(*((const uint32_t*)p+1)));
- return v.v;
- }
- #define AV_WL64 AV_WL64
- static av_always_inline void AV_WL64(void *p, uint64_t v)
- {
- union { uint64_t v; uint32_t hl[2]; } vv = { v };
- __asm__ ("stwbrx %2, %y0 \n\t"
- "stwbrx %3, %y1 \n\t"
- : "=Z"(*(uint32_t*)p), "=Z"(*((uint32_t*)p+1))
- : "r"(vv.hl[1]), "r"(vv.hl[0]));
- }
- #endif /* HAVE_LDBRX */
- #endif /* HAVE_XFORM_ASM */
- /*
- * GCC fails miserably on the packed struct version which is used by
- * default, so we override it here.
- */
- #if HAVE_BIGENDIAN
- #define AV_RB64(p) (*(const uint64_t *)(p))
- #define AV_WB64(p, v) (*(uint64_t *)(p) = (v))
- #endif
- #endif /* AVUTIL_PPC_INTREADWRITE_H */
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